It is known that radioactivity is being emitted with an intensity of $175 \mathrm{mCi}$ at a distance of $1.0 \mathrm{m}$ from the source. How far in meters from the source should you stand if you wish to be subjected to no more than $0.20 \mathrm{mCi} ?$
Added by Jennifer R.
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Mathematically, this can be represented as: $I \propto \frac{1}{d^2}$ Show more…
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